C++ (Cpp) lwp_unpark Examples

Example #1

File: sys_lwp.c Project: ryo/netbsd-src

/*
 * 'park' an LWP waiting on a user-level synchronisation object.  The LWP
 * will remain parked until another LWP in the same process calls in and
 * requests that it be unparked.
 */
int
sys____lwp_park60(struct lwp *l, const struct sys____lwp_park60_args *uap,
    register_t *retval)
{
	/* {
		syscallarg(clockid_t)			clock_id;
		syscallarg(int)				flags;
		syscallarg(const struct timespec *)	ts;
		syscallarg(lwpid_t)			unpark;
		syscallarg(const void *)		hint;
		syscallarg(const void *)		unparkhint;
	} */
	struct timespec ts, *tsp;
	int error;

	if (SCARG(uap, ts) == NULL)
		tsp = NULL;
	else {
		error = copyin(SCARG(uap, ts), &ts, sizeof(ts));
		if (error != 0)
			return error;
		tsp = &ts;
	}

	if (SCARG(uap, unpark) != 0) {
		error = lwp_unpark(SCARG(uap, unpark), SCARG(uap, unparkhint));
		if (error != 0)
			return error;
	}

	return lwp_park(SCARG(uap, clock_id), SCARG(uap, flags), tsp,
	    SCARG(uap, hint));
}

Example #2

File: netbsd32_compat_60.c Project: goroutines/rumprun

int
compat_60_netbsd32__lwp_park(struct lwp *l,
    const struct compat_60_netbsd32__lwp_park_args *uap, register_t *retval)
{
	/* {
		syscallarg(const netbsd32_timespecp) ts;
		syscallarg(lwpid_t) unpark;
		syscallarg(netbsd32_voidp) hint;
		syscallarg(netbsd32_voidp) unparkhint;
	} */
	struct timespec ts, *tsp;
	struct netbsd32_timespec ts32;
	int error;

	if (SCARG_P32(uap, ts) == NULL)
		tsp = NULL;
	else {
		error = copyin(SCARG_P32(uap, ts), &ts32, sizeof ts32);
		if (error != 0)
			return error;
		tsp = &ts;
	}

	if (SCARG(uap, unpark) != 0) {
		error = lwp_unpark(SCARG(uap, unpark),
		    SCARG_P32(uap, unparkhint));
		if (error != 0)
			return error;
	}

	return lwp_park(CLOCK_REALTIME, TIMER_ABSTIME, tsp,
	    SCARG_P32(uap, hint));
}

Example #3

File: sys_lwp.c Project: Tommmster/netbsd-avr32

int
sys__lwp_unpark(struct lwp *l, const struct sys__lwp_unpark_args *uap, register_t *retval)
{
	/* {
		syscallarg(lwpid_t)		target;
		syscallarg(const void *)	hint;
	} */

	return lwp_unpark(SCARG(uap, target), SCARG(uap, hint));
}

Example #4

File: thread_netbsd.c Project: serge-hulne/golang

void
runtime·semawakeup(M *mp)
{
	uint32 ret;

	// spin-mutex lock
	while(runtime·xchg(&mp->waitsemalock, 1))
		runtime·osyield();
	mp->waitsemacount++;
	// TODO(jsing) - potential deadlock, see semasleep() for details.
	// Confirm that LWP is parked before unparking...
	ret = runtime·lwp_unpark(mp->procid, &mp->waitsemacount);
	if(ret != 0 && ret != ESRCH)
		runtime·printf("thrwakeup addr=%p sem=%d ret=%d\n", &mp->waitsemacount, mp->waitsemacount, ret);
	// spin-mutex unlock
	runtime·atomicstore(&mp->waitsemalock, 0);
}

Example #5

File: netbsd32_lwp.c Project: goroutines/rumprun

int
netbsd32____lwp_park60(struct lwp *l,
    const struct netbsd32____lwp_park60_args *uap, register_t *retval)
{
	/* {
		syscallarg(const netbsd32_clockid_t) clock_id;
		syscallarg(int) flags;
		syscallarg(const netbsd32_timespec50p) ts;
		syscallarg(netbsd32_lwpid_t) unpark;
		syscallarg(netbsd32_voidp) hint;
		syscallarg(netbsd32_voidp) unparkhint;
	} */
	struct timespec ts, *tsp;
	struct netbsd32_timespec ts32;
	int error;

	if (SCARG_P32(uap, ts) == NULL)
		tsp = NULL;
	else {
		error = copyin(SCARG_P32(uap, ts), &ts32, sizeof ts32);
		if (error != 0)
			return error;
		netbsd32_to_timespec(&ts32, &ts);
		tsp = &ts;
	}

	if (SCARG(uap, unpark) != 0) {
		error = lwp_unpark(SCARG(uap, unpark),
		    SCARG_P32(uap, unparkhint));
		if (error != 0)
			return error;
	}

	return lwp_park(SCARG(uap, clock_id), SCARG(uap, flags), tsp,
	    SCARG_P32(uap, hint));
}